Cremation-furnace.



A. H. DAVIDSON & S. VSUNDELIUS.

CRBMATION FURNAGB.

LIGATION FILED 11141.12, 1909.

Patented 0111.31, 1911.

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APPLICATION FILED M342, 1909.

1,007,543. Patented 001131,1911.Y

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Patented Oct. 31, 1911.-

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A. H. DAVIDSON & S. SUNDELIUS.

GREMATION PUENAGB.

APPLICATION FILED APB.. 12, 1909.

Patented 001.31; 1911.

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cOLUMBIA PMNCKIRAPH co.. WASHINGTON. D. c.

UNITED STA-TES PATENT OFFICE.

ALEXANDER H. DAVIDSON, OF COLlVIA, AND SEVERUS SUNDELIUS, OF SAN FRANCISCO,

i CALIFORNIA.

CREMATION-FURNACE.

Speccation of Letters Patent.

Patented oct. 31, 1911.

To all whom it may cof/wem:

Be it known that we, ALEXANDER H. DAVIDSON, of Colma, California, and SEVERUS SUNDELIUS, of San Francisco, California, have invented certain new and useful Improvements in Cremation-Furnaces, whereof the following is a specification.

Our invention relates to furnaces and more particularly to furnaces for cremating bodies, but it is applicable to other purposes.

Preliminary to describing our invention reference will be had to our copending application," Serial No. 627,316, filed May 15, 1911, the subject matter of which is also shown in this application, but not claimed herein, said subject matter consisting in the specific construction and relation of the burner or nozzle and the fuel supply and manipulating means associated therewith.

In carrying out the invention as applied to cremation furnaces, we provide the furnace with a combustion chamber of size suiiicient to receive the body to be cremated, includingthe 'coffin when desired. At one end of the combustion chamber is a lire hole, into which we thrust ya blast pipe, through which Voil and air are forced into the chamber and there burned, giving an.

intense heat. At the same end of the furnace with the 'blast pipe we provide a flue, which may 'connect'w'ith a suitable stack. This arrangement produces a dead-air space at the opposite end of the combustion chamber, which acts to'cushion the blast, and we thus eliminate'the'noise of the blast. We are also, by this means, enabled to control the application of the heat, and direct it to whatever point of the chamber we desire. Ve give the bottom of the chamber a slope toward the blast end thereof, and there provideV a receptacle into which any fusible metalabout the body', such as the cofn handles, will'run and can be removed in advance 'of the ashes.

Other features of the invention will appear from the subjoined description of an embodiment of it'as applied to cremation purposes, which' we have illustrated in the accompanying drawings.

The drawings show the apparatus in its best form, but it may be varied without departing from the spirit of the invention.

In the drawings: Figure 1 is a sectional Yelevation showingthe furnace with a coflin.

therein, ready for operation. Fig. 2 is a sectional plan view, the section being taken on the line 2, 2, of Fig. 1. Fig. 3 is a cross section taken on the line 3,3, of Fig. 2. Fig. 4 is a cross section taken on the line 4, 4, of Fig. 2. Fig. 5 is an end view showing the gate through which bodies are run into the combustion chamber, and showing' the means for operating such' gate. Fig. 6 is a top view of the parts shown in Fig. 5 partly broken away to bettershow the gate and means for operating ity,

In the several figures: 1 represents the body of the furnace which may be built of y brick and lined with fire brick, or other suitable refractory material maybe used.

The furnace comprises a combustion chamber 2 which is provided with flues 3 and 4 at each end.

5is a damper for closing flue 3, and 6 is a damper for closing flue 4. On each side of the combustion chamber is a ledge 7, the

purpose of which is to furnish a support for a coflin as 8, or other receptacle for the body to be incinerated. The coflin may rest upon bars 9 which, in turn, rest upon the ledges 7.

The back end of the-chamber 2 is open to permit the coflin being run in ,which may be done on a suitable car or otherwise. The

opening is then closed by a gate 10, hung by wheels 11 from a track 12; The gate is operated by a cable 13 attached by its end to opposite sides of the gate, as at 14, and passing over pulleys 15 and 16. these pulleys may be an idler as at 15, and the other 16 provided with a crank 17 for turning it and moving the cable and gate. The open position of the gate isy shown in dotted lines in Fig. 5, and its closed position in full lines, the lower- -partbeing broken away to show interior of the combustion chamber which it closes.

At' the end of the furnacel opposite the gate 10 is a fire hole 18 through which isI One of In the door 10 we arrange a peep hole 27, closed by a swinging cover 28, as shown more particularly in Fig. 5.

29 is a blast nozzle connected by hose 30 with main 23 and controlled by valve 31, and used for cleaning purposes. Also the nozzle 29 may be carried to the opposite end of the furnace and thrust through hole 27, either to clean the furnace when it isv not running, or to furnish additional air to the fuel when the furnace is running. The pipe 19 and its connection may be counterbalanced by a weight 32 connected to it by a rope 33 passing over suitable pulleys 34.

At 35 is a hand grasp for convenience in manipulating the blast.

36 is a rod which may be used to steady pipe 19, by resting against the oor 37, as shown. By the above means the blast from the end of pipe 19 may be directed at will to different parts of the combustion chamber, as partly indicated by the dotted lines in Fig. 1, showing different positions of the pipe.

38 is an air hole provided with a stopper as shown.

At 39 is a receptacle, which may be made to slide in and out as indicated.

It will be observed that the floor of the chamber slopes toward the blast end, hence any fusible materials that may be in the furnace and melted by the heat flow down to the receptacle 39 and may be removed. Similarly the ashes resulting from the operation may be collected in receptacle 39 and removed.

By supporting the body upon the ledges 7 the space between the ledges and under the body acts as a ue, and the llame from blast pipe 19 plays over the body toward the opposite end of the chamber and back under the body to ue Ll, the flue 3 being closed meanwhile by damper i5. r:[he body is thus suspended, as it were, in flame, and the heat may be directed to any particular part, as the torso, for example, which requires the greatest heat. This reverberation of the flame also enables us to entirely consume all smoke by simply regulating the air supply. And the cushioning effect of the space at the end against gate 10 eliminates the noise which the blast would otherwise make. 7e thus secure the desired result with a minimum consumption of fuel, a maximum of cleanliness and a minimum of noise. Flue 3 may be omitted altogether in some cases, but we find it convenient in t-he preliminary heating of the furnace and in cleaning same.

VIn using the apparatus, the body to be burned is inserted into the combustion chamber through the gate 10 and placed upon the bars 9 on the ledges 7. Gate 10 is then closed and the blast nozzle 19 manipulated to direct the blast to different parts of the chamber as needed. The combustion may be further controlled by manipulating the dampers 5 and 6, causing the draft to be greater at one end or the other as desired. Then the incineration is complete the blast may be turned off by means of the valves 24 or 25, which also serve for its control While on. The ashes are then brushed into ash receiver 39 and thereby collected, and for this purpose the air hole or hand hole 38 may be made of use. The ash receiver 39 may be in the form of a drawer, as shown, for greater convenience of manipulation.

Vhile we have shown our invention as applied to a cremation furnace, and contemplate using it more particularly for that purpose, we do not limit ourselves to that use. The same furnace and principle of burner and Hue at the same end thereof is equally applicable to other purposes, such as steam boilers for example, and such applications are within the scope of the claims appended hereto.

Having thus described our invention, and believing that we have made a new and valuable improvement in the art to which it pertains, what we claim and desire to secure by Letters Patent is z- 1. A furnace for cremating purposes comprising a combustion chamber, having a channel in its floor extending longitudinally thereof, the sides of said channel adapted to support the body to be incinerated, a flue leading from said channel at one end thereof, a blast nozzle extending into the furnace substantially in alinement with the channel for directing a iiame into said combustion chamber above said channel and at the same end as said flue, whereby the iame emanating from said nozzle plays over the body and back under it to the flue.

2. In a furnace for cremation purposes, a combustion chamber having a blast hole at one end thereof, a gate at the opposite end through which a body may be inserted, ledges on the sides of the chamber adapted to support the body to be incinerated said ledges and bottom and body embracing a channel therebetween, the ledges and the bottom of the chamber sloping toward the blast end, a liuc leading from each end of said chamber and communicating with said flue and a slidable receptacle located below the lower end of the bottom of the chamber adapted to receive any fusible material that flows down said bottom.

3. In a furnace for cremation purposes, a combustion chamber having a blast hole at one end thereof, a slidable gate at the opposite end through which a body may be inserted, the gate having a peep hole therein closed by a swinging cover, ledges on the sides of the chamber adapted to support the body to be incinerated said ledges and bottom and body embracing a channel therebetWeen, the ledges and the bottom of the In testimony that We claim the foregoing 10 chamber sloping toward the blast end, a flue We have signed these presents at San Franleading from each end of said chamber and cisco, this 24th of March, 1909.

communicating with said flue an independent damper applied to each flue, and a ALEXANDER H' DAVIDSON slidable receptacle located below the lower SEVERUS SUNDELIUS end of the bottom of the chamber adapted In presence ofi to receive any Jfusible material that Hows W. S. BATES,

down said bottom. ALFRED FUHRMAN.

Copies of this patent may be obtained for vc cents each, by addressing the Commissioner of Patents, Washington, D. G. 

